While trying to upload my application to App Store Connect, I got stuck at "Verifying Assets with the App Store" for 4-5 hours. My network is fine, running at 50-60 upstream, and well over 100 downstream.
To fix this issue, I opened the Application Loader, opened the Preferences (⌘ + ,) and navigated to the 'Advanced' tab.
Disable the Signiant and Aspera Transfer Protocols but leave DAV on.
来源：https://stackoverflow.com/questions/52770972/application-loader-xcode-stuck-on-verifying-assets-with-the-app-store